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Cushion|Lab Grown|IGI

1.63ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG680521351

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG680521351

Diamond specifications and retailer prices

From £177 GBP
$236 USD
As of October 28, 2026
Save £1,325 GBP (88%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,502 GBP at Do Amore Diamonds · As of October 27, 2026
View at Do Amore Diamonds

About this 1.63ct lab-grown cushion diamond

This 1.63ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG680521351 or 680521351. Listed at 5 retailers as of October 27, 2026, with prices from £177 to £1,502, a £1,325 spread on the same certified stone. Do Amore Diamonds lists it at £1,502. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.63
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG680521351
Dimensions6.90 × 6.77 × 4.51 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.90 mm6.77 mm1.63 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG680521351
Side View
Table 60.0%Crown 34.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 66.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £1,502 GBP|Low: £112 GBP|High: £1,517 GBP|Avg: £633 GBP|+7.0%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 25, 2026
Retailer 5£177 GBP
Retailer 4£335 GBP
Retailer 9£348 GBP
Retailer 6£407 GBP
Retailer 10£418 GBP
Retailer 7£602 GBP
Retailer 3£657 GBP
Retailer 2£858 GBP
Retailer 8£1,044 GBP
Do Amore Diamonds£1,502 GBP

12 data points across 10 retailers

5 retailers£177 GBP to £1,502 GBP

A
Cheapest Retailer
-
£177 GBP
$236 USD
Final sale: no returns
B+
Retailer 2
-
£335 GBP
$446 USD
View
Retailer 3
-
£657 GBP
$875 USD
View
Price last confirmed 8 days ago
B
Retailer 4
-
£858 GBP
View
Most Expensive
B
Do Amore Diamonds
27-119BF3A22 · Oct 27
£1,502 GBP
$2,000 USD
View
4 more retailers have this diamond
Prices start from £177 GBPSave up to £1,325 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.63ct Cushion
£177 GBP